Device for removing splinters from ground wood or sulfite.



No. 628,3". Patented July 4, [899.

.1. GOODFELLOW.

DEVICE FOR REMOVING SPLINT ERS FROM GROUND WOOD OR SULFITE.

(Application filed Aug. 17, 1898.)

(No Model.)

WITNESSES: J

A TTOHNEYS.

m: nanms Pz'rzns ca, PnoTouTwo WASHINGTON. n. c.

I a tank A, above which is supported by suit- I wall upon a table E,extending forwardly and UNITED STAT-Es PATENT OFFICE.

JOSEPH GOODFELLOW', OF FORT EDWVARD, NEW YORK.

DEVICE FOR REMOVING SPLINT ERS FROM GROUND WOOD OR SULFITE.

SPECIFICATION forming part of Letters Patent No; 628,311, dated July 4,1899.

Application filed August 17,1898.

To all whom, it may concern:

Be it known that -I, JOSEPH GOODFELLOW, of Fort Edward, in the county ofWashington and State of New York, have invented a new and ImprovedDevice for Removing Slivers from Ground Wood or Sulfite, of which thefollowing is a full, clear, and exact description.

The invention relates to the manufacture of paper from mechanically orchemically prepared wood-pulp and its object is to pro: vide a new andimproved apparatus for removing the slivers or other objectionableparticles from the ground wood-pulp or sulfite to greatly improve thequality of the paper manufactured from the pulp or sulfite;

The invention. consists of novel features and parts and combinations ofthe same, as will be fully described hereinafter and then pointed out inthe claims.

Reference is to be had to the accompanying drawings, forminga part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures- Figure 1 is a plan view of theimprovement. Fig. 2 is a sectional side elevation of the same on theline 2 2 in Fig. 1, and Fig. 3 is a transverse section of the same onthe line 3 3 in Fig. 1.

The improved apparatus is provided with able brackets attached to thetank a feed-box B, connected by a pipe 0 with a pulp-supply, so that themechanically or chemically prepared pulp fills the said feed-box Bduring the operation of the apparatus.

In the forward wall of the feed-box B, and at the lower end thereof, isformed a longitudinally-extending outlet B for delivering the pulp to atrough D, formed or arranged on the front of the feed-box B, the saidtrough discharging at the upper edge of its forward downwardly todeliver the pulp evenly upon the peripheral surface of astraining-cylinder F, having its shaft G journaled in suitable bearingsin the ends of the tank A. The upper portion of the straining-cylinder Fextends above the tank A, while the remaining part extends within thetank, it being understood that the pulp is delivered to the periph-Serial No. 688,786. (No model.)

eral surface of the cylinder at or near the top thereof, as indicated inFig. 3. The strainin g-cylinder F has its rim formed by a screen orsieve of suitable mesh or of perforated sheet metaL'the rim beingattached to heads. F and'F of which the head F opens to an outlet A,formed in one end of the tank A,-

so that the strained material within the cylinder F can pass through thehead F and the outlet A to a suitable receptacle for further treatmentin the manufacture of paper. The heads F and F have their peripherallower portions covered or protected by flexible bands H H, respectively,carried by the ends of the tank A, and the upper portions of the saidheads are closed on their faces by transverse boards I l, secured to thetop of the tank. Thus the cylinder F has its interior closed to thetank, the external surface being adapted to pass through the water andother matter contained in the tank A. The rear of 'the tank A is formedwith an overflow A extending throughout the length of the said rear endand opening into an inclined chute J for carrying 0d the slivers andother objectionable particles to a desired place of discharge, to betreated again and returned to the box B for further treatment in theapparatus.

The operation is as follows: The pulp or sulfite in liquid form passesfrom the feedbox B through the outlet B into the troughD, from which itspreads evenly over the table E and is delivered in this condition tothe exterior of the perforated surface of the straining-cylinder F. Asthe latter is rotated by any suitable means the desirable portions ofthe pulp readily pass through the meshes of the cylinder to the interiorof the cylinder, while the slivers and other large objectionableparticles carried by the said rim into the accumulated matter in thetank A are finally discharged over the overflow A into the chute J. Thedesirable portions of the pulp pass from the interior of thestraining-cylinder F through the head F and outlet A to a suitablereceptacle sliverless and a finished product. The slivers and otherobjectionable particles are taken to a suitable refining-machine, wherethey are brought to proper condition for further treatment by theapparatus to obtain more desirable portions of the pulp and finallyworking all the slivers into pulp, saving all Waste.

The table E is supported at its upper end by the trough D and at itslower end by suitable brackets E, attached to the tank A.

From the foregoing it will be seen that the slivers and otherobjectionable matter are readily separated from the desirable portionsof the pulp, and consequently the latter is more capable of being formedinto a highgrade paper, while the slivers and objectionable particlesare again treated and returned to the apparatus. Thus all the valuableparticles originally contained in the pulp are made use of in themanufacture of paper.

Having thus fully described myinvention, I claim as new and desire tosecure by Letters Patent 1. In a pulp-strainer, the combination of atank having therein an overflow-opening and also having a pulp-dischargeorifice at one end, a reticulated cylinder mounted in the tank andhaving at each end an annular head, one of said heads being directlyadjacent to the pulp-discharge orifice, a flexible band bearing againsteach head of the cylinder and serving to prevent the escape of the pulpfrom the cylinder to the tank, the pulp passin g through one of theheads to the dischargeorifice, transverse closures mounted at the upperportion of the tank and respectively bearing against the heads of thecylinder, to close the same, and means for feeding the pulp upon thecylinder.

2. In a pulp-strainer, the combination of a tank having adischarge-orifice, a reticulated cylinder mounted to turn in the tankand having communication with the dischargeorifice at one end of thecylinder, the cylinder projecting above the tank, a closure for each endof the cylinder at points above the tank, such closures being carried bythe tank, an inclined table leading to the upper side of the cylinder,and a feed-box delivering the pulp to the table.

In a pulp-strainer, the combination of a tank having an outlet-orificetherein, a reticulated cylinder mounted to turn in the tank andcommunicating with the outlet-orifice at one end of the cylinder, thecylinder projecting above the upper edges of the tank, and a closure foreach end of the cylinder at points above the tank, such closures beingattached rigidly to the tank and bearing against the ends of thecylinder.

JOSEPH GOODFELLO\V.

Witnesses:

ORVILLE C. ROBINSON, FRANK GooDFELLoW.

